Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetSize.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetSize.c
new file mode 100644
index 00000000..69b9bf46
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetSize.c
@@ -0,0 +1,69 @@
+/* $Id: bs3-cmn-ExtCtxGetSize.c $ */
+/** @file
+ * BS3Kit - Bs3ExtCtxGetSize
+ */
+
+/*
+ * Copyright (C) 2007-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "bs3kit-template-header.h"
+#include <iprt/asm-amd64-x86.h>
+
+
+#undef Bs3ExtCtxGetSize
+BS3_CMN_DEF(uint16_t, Bs3ExtCtxGetSize,(uint64_t BS3_FAR *pfFlags))
+{
+    uint32_t fEcx, fEdx;
+    *pfFlags = 0;
+
+    ASMCpuIdExSlow(1, 0, 0, 0, NULL, NULL, &fEcx, &fEdx);
+#if 1 /* To disable xsave/xrstor till IEM groks it... */
+    if (fEcx & X86_CPUID_FEATURE_ECX_XSAVE)
+    {
+        uint32_t fEax;
+        ASMCpuIdExSlow(13, 0, 0, 0, &fEax, NULL, &fEcx, &fEdx);
+        if (   fEcx >= sizeof(X86FXSTATE) + sizeof(X86XSAVEHDR)
+            && fEcx < _32K)
+        {
+            *pfFlags = fEax | ((uint64_t)fEdx << 32);
+            return RT_UOFFSETOF(BS3EXTCTX, Ctx) + RT_ALIGN(fEcx, 256);
+        }
+    }
+#endif
+    if (fEdx & X86_CPUID_FEATURE_EDX_FXSR)
+        return RT_UOFFSETOF(BS3EXTCTX, Ctx) + sizeof(X86FXSTATE);
+    return RT_UOFFSETOF(BS3EXTCTX, Ctx) + sizeof(X86FPUSTATE);
+}
+